GO:0008118

N-acetyllactosaminide alpha-2,3-sialyltransferase activity

Details: 
Catalysis of the reaction: CMP-N-acetylneuraminate + beta-D-galactosyl-1,4-N-acetyl-D-glucosaminyl-glycoprotein = CMP + alpha-N-acetylneuraminyl-2,3-beta-D-galactosyl-1,4-N-acetyl-D-glucosaminyl-glycoprotein. [EC:2.4.99.6]
Evidence Code: